It is a rolling code with 4 codes on each button, like here: https://github.com/pimatic/pimatic/issues/386.
…but simple use protocol “Rolling1” with the 4 codes in the config do not work.
I can provide all codes from my remote if helpful.

@Matthias-Gröschl Well, firstly try the auto discovery function… If that doesnt work you can create a couple of test switches with different protocols and see if that would work. Dont forget to set the socket in learn mode.

If that doesnt work you can create a couple of test switches with different protocols and see if that would work.

cannot imagine that this will work since the devices seem to have rolling code as said above.
if they do not work with the rollingcode protocol, maybe try to get some compatible RF plugs instead? Sorry to have no satisfying answer